Answer:
B
Step-by-step explanation:
-t²+4t+5=0
t²-4t-5=0
t²-5t+t-5=0
t(t-5)+1(t-5)=0
(t-5)(t+1)=0
t=5,-1
when t=0,d=5
actual time it it is in air=5-1=4 seconds.
2 and 4/5 is 14/5 as a mixed number.
Answer:
The function given is non-linear.
Step-by-step explanation:
The slope between (0, 2) and (2,6):

The slope between (2,6), and (3, 12):

Since the slopes are not equal to each other, the function is non-linear. A linear function's slope must stay consistent.
Hope this helps.
Answer:
50.27
Step-by-step explanation:
A=πr2
A=π×4^2
A=16π
A=50.265482457437
Answer:
Less than nine
Step-by-step explanation: